DE102017219497A1 - Cooking appliance with a lighting device for generating a housing-external focal point - Google Patents

Abstract

The invention relates to a cooking appliance (1), comprising a housing (2) in which a cooking chamber (3) is formed, and a door (5), which is arranged movably on the housing (2) and for closing the cooking chamber ( 3), and with a lighting device (13) having at least one light source (14, 15), wherein the lighting device (13) is arranged at least with partial components on the housing (2), wherein the lighting device (13) an optical device (18), which is designed for the defined influencing of the light beams (16, 17) of the light source (14, 15) such that the light beams (16, 17) outside the housing (2) in a focal point (19) are bundled.

Description

The invention relates to a cooking appliance with a housing in which a cooking chamber is formed. The cooking appliance also has a door, which is movably arranged on the housing and is designed to close the cooking chamber. The cooking appliance furthermore has a lighting device which has at least one light source. The lighting device is arranged at least with partial components on the housing.

In cooking appliances such as an oven or a steam cooker or a microwave cooking appliance, it is known that lighting devices are present. With these, for example, the cooking chamber can be illuminated inside. Such is for example from the WO 2011/117037 A1 known. There, light sources are arranged externally to the door, wherein by means of additional optical elements, such as reflectors, the light can then be passed into the cooking chamber. In addition, it is also possible there that a space located in front of the cooking chamber can be illuminated by the light sources of the lighting device, for example, to be able to illuminate an extended food support from above.

In addition, it is also possible there to initiate the light of the door-external light source in a cooking chamber closing door.

In addition, from the DE 10 2009 000 655 B1 a household appliance for preparing food known. There it is provided that a lighting device has a light source, which is arranged in the front region of a housing and is arranged externally to a door. Externally to the door beyond a light guide is arranged. In one embodiment, it is provided that a further light guide is arranged on the door, which couples in the closed state of the door with the door-external light light, so that the light from the light source via the two light guides can be introduced into the door. The door-side optical fiber is movably disposed relative to the door.

In the known embodiments, a variety of lighting in the oven, take place in front of the oven and in the door, yet the functionality is limited in terms of individual optical illumination specific areas.

It is an object of the present invention to provide a cooking appliance in which the lighting of specific portions is improved with the lighting device.

This object is achieved by a cooking appliance having the features of claim 1.

One aspect of the invention relates to a cooking appliance with a housing in which a cooking chamber is formed. The cooking appliance also has a door. The door is movably arranged on the housing. It is also designed to close the cooking chamber. The cooking appliance furthermore has a lighting device which has at least one light source. The lighting device is arranged at least with subcomponents on the housing and arranged outside the door at least with subcomponents. The lighting device has an optical device, which is designed for the defined influencing of the light beams of the light source such that the light beams are bundled outside the housing in a focal point. By such a configuration, it is then possible to bundle the light beams emerging from the housing in such a way that they are prepared for further use, for example for coupling into a housing-external coupling region. As a result, it is then possible, for example, to make this coupling region relatively small and compact and still to couple in a high proportion of the light rays emerging from the housing and guided in a defined manner into the coupling region. On the other hand, it is then also possible with this embodiment, in an unintentional coupling in a housing-external coupling-in area to distribute the light beams further, so that they can illuminate a housing-external area directly better. Since, in accordance with the laws of optics, the light rays expand after the focal point and form a specific light cone, the focussing of the light rays to a widened cone of light can be defined by the defined selection of the external focal point and thus again at the desired distance large-area lighting done.

The optical device has at least one optically acting focusing element, such as a converging lens or a parabolic mirror or the like, which is arranged in the housing. The effect of this housing-side optical focusing element is then such that light beams emitted by the light source are bundled with this focusing element in such a way that a defined focus is produced in a defined manner outside the housing and thus at the exit of the light beams from the housing.

It is advantageously provided that this at least one focus or this at least one focal point is formed or generated at a defined distance from an outer wall of the housing. The above advantages in terms of functional, individual further use of the Housing emerging light beams is therefore possible in a particularly advantageous manner.

The distance is preferably between 0 cm and 5 cm, in particular between 0 cm and 4 cm, in particular between 0 cm and 3 cm, in particular between 0 cm and 2 cm, for example between 0.5 cm and 1.5 cm. The focal point is thus placed relatively close to the housing, so that just after the focus takes place again given fanning the light beams to a widened light cone is advantageous in that, for example, in a solid food support, thus in an anteroom to the cooking appliance (in the depth direction of the cooking appliance considered), can be illuminated as large as possible. As a result, such a fanning out is made possible by this embodiment that the food support is illuminated from above with this one light source at least 50 percent of its surface, preferably at least 70 percent of its surface. On the other hand, it is also possible by this defined distance in a particularly advantageous manner, to allow the most extensive and area-compact coupling these emerging from the housing light rays in a door of the cooking appliance when the door is closed. Since the door then usually rests against the housing or the coupling region of the door-side optical element is arranged, in particular, close to an outer wall of the housing from which the light rays of the light source emerge, such a near displacement of the focal point to the outer wall of the housing is advantageous, in order then to enable the best possible and extensive coupling of the light rays into the door.

It is preferably provided that the door has at least one optical element of the lighting device, in which light beams of the light source in the closed state of the door are preferably coupled. The focus is in the closed state of the door at a coupling end of the optical element or within a distance interval considered in the direction of light propagation of preferably +/- 3 cm, in particular +/- 2cm, in particular +/- 1 cm thereto. The above-mentioned advantages are thereby achieved to a particular extent and the coupling of the emerging from the housing light rays in the door is particularly precise and circumferentially possible. In addition, a particularly compact design is possible. This door-side optical element is thus a subcomponent of the lighting device, which is arranged outside the housing and inside the door. The lighting device is thus arranged in this embodiment in sub-components also inside the door.

It is preferably provided that this coupling end has an area which is greater than the area of the focal point. This is a further very advantageous embodiment, since thus the focused light in the focus or these light beams are particularly extensively coupled into the door.

Preferably, the lighting device has a light guide, which is arranged in the door. With the light-light device, in the closed state of the door, light beams radiated by the light source can be radiated forward out of the door and / or backwards out of the door viewed in the depth direction of the cooking appliance. By means of such a configuration, in the closed state of the door, specific areas in front of the door and thus outside the cooking appliance can be illuminated individually. In addition, it is then also possible to illuminate components located in the door, which in turn can be perceived on external viewing of the door as well as externally illuminated elements. In addition, it is also possible to radiate defined in the closed state of the door from the door light in the cooking chamber, so that even in the closed state of the door is an illumination of portions of the oven with radiated from the door light is possible. As a result, the consideration of partial areas of the cooking chamber is improved even in the closed state of the door.

It is preferably provided that the lighting device is designed to illuminate an anteroom lying in front of a feed opening of the cooking chamber in the depth direction of the cooking appliance when the door is open. The vestibule is arranged at such a distance from the focal point that the illumination of the vestibule takes place with a light cone that has been widened again in the direction of the propagation of the light beams after the focal point. This can be done as large as possible and uniform or homogeneous illumination of the vestibule. Just when, for example, with the door open a food support from the cooking chamber is at least partially pulled out and is in this vestibule, this food support can be illuminated from above through this widened light cone over a large area and illuminated, in particular to be broadcast very homogeneously.

It is preferably provided that the lighting device has a first operating mode, in which the light beams are radiated out of the housing with a first luminous flux at a light exit region. The lighting device has at least one second operating mode, in which the light beams are radiated out of the housing in a second luminous flux different from the first luminous flux at the light exit region. This is another very advantageous embodiment because it can be at different Given a different light flux conditions are generated. Depending on the location of the area to be illuminated and / or an object to be illuminated in the cooking appliance and / or outside of the cooking appliance, a more appropriate illumination can thus be provided, so that an observer always has a situation-adapted illumination. The perceptibility in the different areas and / or the different elements is then given individually improved. Demand-oriented can then also be illuminated in areas that are partially concealed or located in niches or located in the rear of the cooking chamber and thus illuminated with individual brightness. Other effects, such as unwanted dazzling or excessive illumination of elements and / or areas can be avoided. Thus, not only an improved optical illumination with regard to the desired and adapted brightness is always achieved, but also a user-friendly perception of this illumination is made possible.

Preferably, it is provided that the execution of the first operating mode is coupled to a first position of the door and / or the execution of the second operating mode is coupled to a second position of the door. Thus, it can be provided, for example, that the individual luminous flux of the lighting device is automatically adjusted depending on the respective position of the door. This can be done for example via a control unit. It can be provided that the first position of the door is a fully closed position and / or the second position of the door is such a position in which an anteroom forms in front of a feed opening of the cooking chamber, which is bounded down through the door.

It can be provided, for example, that in the first operating mode the luminous flux is higher than in the second operating mode. Just when, especially in the first operating mode, the door is completely closed, then a higher luminous flux can be generated to provide sufficient illumination in the interior of the oven, so that even through the closed door, the cooking chamber can be observed improved for a user , In addition to or instead of this, then also the blasting of the door external to the device and thus in particular, for example, carried forward with a higher luminous flux, so that an individual lighting of areas in advance is improved even when the door is closed. Also, in the context, components in the door that are to be individually illuminated can then be illuminated with a higher luminous flux in this respect, so that the front perceptibility of an observer who sees the door at the front is improved.

On the other hand, it can also be provided in an alternative embodiment that, for example, in the second operating mode, in which in particular the door is at least partially opened, the light beams are generated with a higher luminous flux than in the first operating mode. As a result, extensive illumination, in particular of an anteroom, can take place in front of a cooking chamber, so that even with a reduced number of light sources a particularly bright and homogeneous illumination of a large surface area and, in particular, a larger volume area in this anteroom can take place. Also, a food support can thus be illuminated sufficiently bright with a minimized number of light sources in its withdrawn state from the oven from above.

In particular, it is also provided that the light beams with individual light intensity can be generated in the different operating states. The characteristic of the variable light intensity at at least one orifice is advantageous in this respect.

As already mentioned, in an advantageous embodiment in a state of light coupling into the door, the luminous flux is different from a state when an extracted food support in the anteroom of the cooking chamber is to be illuminated from above by at least one light source.

Just when, in conjunction with the above-mentioned preferred example of individual design and locally defined generation of a focal point of the light rays outside the housing then also after the focal point, in particular with the door open, a defined expansion of the light rays to follow a cone of light, can by This configuration of the individual luminous fluxes and the luminous intensity are then individually adapted, which represents the quotient of the luminous flux through the solid angle.

It is preferably provided that the two different luminous fluxes in the at least two different operating states differ by at least the value of 50 lumens.

The difference of the luminous fluxes in different operating states can also be dependent on the number of light sources of the lighting device, which are then each used for individual illumination, for example, of an anteroom in front of the cooking chamber. The same can also be done depending on how many light sources of a lighting device are present and are used for a coupling of light rays in the door with the door closed.

In an advantageous embodiment, the at least one housing-side light source of the lighting device viewed in the depth direction in the region of a control panel or a switch front or a flange, for example, a flange of a muffle, which limits the walls of the oven, or on a vertical front bar, the is designed as Lisene, be arranged.

Preferably, it is provided in the cooking appliance that at least one light aperture with the door open serves as a planar light source for illuminating the antechamber and is designed accordingly, so that a correspondingly expanded light cone acts here. In the closed state of the door, the light beams of the light source are passed through this light aperture via a further transition to the door. Here it can then be provided that the housing-side optical element of the lighting device is advantageously formed such that it has a focusing effect and in this respect forms the housing-side external focal point. The door-side optical element of the lighting device may be a light guide or an optical fiber connection. It can be provided an optical fiber or a plurality of optical fibers. In addition or instead of this, at least one lens or a reflector or a mirror can also be used. The mentioned optical elements can be made of different materials, for example of glass or silicone or PMMA or of PC or of PS or the like.

It can be provided that the illumination device inside the door has an optical element whose coupling-in region, in which the light beams emitted by the housing are coupled in, is designed as an optically acting collection region. Depending on how the light beams arrive at this coupling-in region of the door-side optical element, this collecting region can be designed as a lens convex at least on one side or a concave lens on at least one side.

The lighting device thus preferably has at least two separate optical elements, of which an optical element is arranged outside and inside the housing, and the second optical element is arranged outside the housing and inside the door.

In an advantageous embodiment, these at least two optical elements are each designed as optical focusing elements.

For example, two lenses can be provided here, or a lens and a light guide, which is designed as a fiber optic or optical fiber rod, or a lens and a mirror or a lens and a reflector can be provided. Preferably, the housing-side configuration of the optical element is such that this optical element has a focal point at a distance between 0.5 cm and 2 cm, in particular between 0.5 cm and 1.5 cm, in particular 1 cm.

It can be provided that the optical element, which is arranged on the housing side, to the outer wall, from which the light exits the housing, is offset back inwards. As a result, this optical element is protected accordingly. This also provides some protection against unwanted light scattering in the device. For example, a pipe section can be arranged between the lens and the outer wall or a lateral panel can be formed. This embodiment with a pipe section or a diaphragm can also be such that the pipe section or the diaphragm is formed on the inside with a, for example, frosted, dark surface.

The further optical element, which is arranged on the door side, may be formed on the coupling region with a concave surface or flat. It can be provided that this light collecting region of the optical element, which is arranged on the door side, integrated and thus formed integrally with this optical element. This avoids further media transfer of the light rays in the door between separate optical elements.

It can also be provided here that this optical element, in particular the coupling-in region, which is preferably designed as a light-collecting region, is arranged set back in relation to an outer side of the door inwards. Here, too, the advantages already mentioned above, as have been achieved in the case of a bent or set back arrangement of the optical element in the housing, can then be made possible. It can be provided that this optical element is arranged in an upper region of the door, for example in an upper cover, which is also referred to as a top panel.

In a further advantageous embodiment, it is provided that the illumination device is designed to generate light beams in a first light color and is designed, at least for generating light beams, in a first different second light color. Additionally or instead, it can be provided that the lighting device for generating a Continuous light of the light beams and / or a pulsed light of the light beams is formed.

In particular, it is provided that different operating functions of the cooking appliance are visually displayed by the different light colors and / or different values of operating parameters of at least one operating function of the cooking appliance are optically displayed. Additionally or instead, it can be provided that, depending on a pulse frequency of the light beams, different operating functions and / or different values of operating parameters of at least one operating function of the cooking appliance are optically displayed.

It is preferably provided that the light source is a light-emitting diode. It can also be a multicolor LED. It is preferably provided that the lighting device has a light source which generates light beams with which an anteroom in the depth direction in front of the cooking chamber can be illuminated when the door is open and which also generates light rays which are radiated from the housing into the door when the door is closed. It will then be generated with a single light source light beams for different uses or different specific lighting scenarios.

Preferably, the lighting device has at least two light sources, each of which is designed for this above-mentioned functionality. When viewed in the vertical direction of the cooking appliance, these light sources are preferably arranged above the feed opening of the cooking chamber and, in particular viewed in the width direction, are arranged on opposite sides.

Another independent aspect of the invention relates to a cooking appliance with a housing in which a cooking chamber is formed. The cooking appliance also has a door, which is movably arranged on the housing and is designed to close the cooking chamber. The cooking appliance furthermore has a lighting device which has a light source. The lighting device is arranged at least with partial components on the housing. The lighting device has a first operating mode, in which the light beams are radiated from the housing into the closed door with a first luminous flux at a light exit area and has an at least second operating mode in which the light beams have a second luminous flux different from the first luminous flux Light emission area are emitted from the housing in an anteroom formed with the door open in front of the cooking chamber.

Another independent aspect of the invention relates to a cooking appliance with a housing in which a cooking chamber is formed. The cooking appliance also has a door, which is movably arranged on the housing and which is designed to close the cooking chamber. The cooking appliance furthermore has a lighting device which has at least one light source. The lighting device is arranged at least with partial components on the housing. The lighting device has an optical device, which has a first optical focusing element in the housing, and which has a separate second optical focusing element, which is arranged in the door.

Embodiments of the above-mentioned first independent aspect of the invention are to be considered as advantageous embodiments of the further independent aspects.

The terms "top", "bottom", "front", "rear", "horizontal", "vertical", "depth direction", "width direction", "height direction", etc., are the positions given when the device was used and disposed as intended and orientations indicated.

Further features of the invention will become apparent from the claims, the figures and the description of the figures. The features and feature combinations mentioned above in the description, as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respectively specified combination but also in other combinations without the scope of the invention leave. Thus, embodiments of the invention are to be regarded as encompassed and disclosed, which are not explicitly shown and explained in the figures, however, emerge and can be produced by separated combinations of features from the embodiments explained. Embodiments and combinations of features are also to be regarded as disclosed, which thus do not have all the features of an originally formulated independent claim. Moreover, embodiments and combinations of features, in particular by the embodiments set out above, are to be regarded as disclosed, which go beyond or deviate from the combinations of features set out in the back references of the claims.

• 1 eine schematische Frontansicht auf ein Ausführungsbeispiel eines erfindungsgemäßen Gargeräts;
• 2 eine perspektivische Darstellung des Gargeräts gemäß 1 mit geöffneter Tür;
• 3 eine Seitenansicht des Gargeräts gemäß 1;
• 4 eine Darstellung von Teilkomponenten einer Beleuchtungsvorrichtung des Gargeräts;
• 5 eine weitere schematische Darstellung von Teilkomponenten der Beleuchtungsvorrichtung;
• 6 eine vergrößerte Darstellung des Gargeräts gemäß 1 bis 3 in einem Teilausschnitt mit geschlossener Tür;
• 7 eine beispielhafte Darstellung eines Teilbereichs eines optischen Elements der Beleuchtungsvorrichtung, das türseitig angeordnet ist.

Embodiments of the invention are explained in more detail below with reference to schematic drawings. Show it:

• 1 a schematic front view of an embodiment of a cooking appliance according to the invention;
• 2 a perspective view of the cooking appliance according to 1 with open door;
• 3 a side view of the cooking appliance according to 1 ;
• 4 a representation of sub-components of a lighting device of the cooking appliance;
• 5 a further schematic representation of subcomponents of the lighting device;
• 6 an enlarged view of the cooking appliance according to 1 to 3 in a partial section with closed door;
• 7 an exemplary representation of a portion of an optical element of the lighting device, which is arranged on the door side.

In the figures, identical or functionally identical elements are provided with the same reference numerals.

In 1 is a cooking appliance in a front view 1 which may be, for example, an oven or a steam cooker or a microwave oven. The cooking appliance 1 has a housing 2 in which a cooking space 3 is designed for preparing food. The cooking space 3 is through walls of a muffle, which is in the case 2 is arranged, limited. Front shows the muffle and thus the cooking chamber 3 a loading opening 4 ( 2 ), passing through a door 5 is closable. The door 5 is here pivotable on the housing 2 arranged. the door 5 exemplifies a handle 6 on and is at least partially with a transparent area 7 formed by which in the closed state of the door 5 looked through and thus in the oven 3 can be viewed. The cooking appliance 1 also points in the height direction (y-direction) viewed above the door 5 a control panel 8th on, at the one operating device 9 is arranged.

In 2 is the cooking appliance 1 in a perspective view and with the door open 5 shown. Furthermore, in 2 a separate food support 10 shown, which may be, for example, a baking sheet or a grid or the like. On the food support 10 Here is an example of a food 11 applied. The food support 10 is here in the depth direction (z-direction) from the cooking chamber 3 pulled out and is thus considered in the depth direction in an anteroom 12 in front of the cooking chamber 3 , The cooking appliance 1 also has a lighting device 13 on. In the embodiment shown, the lighting device 13 a first light source 14 which may be, for example, a light diode, in particular a multicolor light-emitting diode. By way of example, it is provided here that the first light source 14 in the height direction (y-direction) considered above the cooking chamber 3 and adjacent to the feed opening 4 is arranged. In particular, it is provided that here a second light source 15 the lighting device 13 is provided. The two light sources 14 and 15 are in the width direction (x direction), on opposite sides of the housing 2 arranged or in the housing 2 arranged. You can, for example, in the area of the control panel 8th or on a vertical respective lisene, which is a front visual component, may be arranged. They may also be arranged, for example, on a front flange, in particular the muffle.

These light sources 14 and 15 are thus arranged outside the door and provide subcomponents of the lighting device 13 that is in the housing 2 are arranged.

In 3 is the cooking appliance 1 according to 2 shown in a side view. The anteroom 12 can be seen here. He is here by the lighting device 13 , especially the light rays 16 and 17 the light sources 14 and 15 illuminated. The rays of light 16 . 17 each form an expanded cone of light here 22 , which is directed obliquely forward and down and the food support 10 illuminated from above.

The lighting device 13 has an optical device 18 on, as shown in the exemplary illustration in 4 is shown. The optical device 18 is for the defined influencing of the light rays of the light sources 14 . 15 formed such that these light rays outside the housing 2 in a focal point 19 are bundled. The focal point 19 is at a defined distance to an optical element 20 the optical device 18 and thus in particular at a defined distance to an outer wall 21 of the housing 2 educated. Preferably, a distance A between 0 cm and 2 cm.

As already in 4 it can be seen, the light rays 16 which are shown here by way of example, in the focal point 19 bundled and then widen to the focal point 19 , viewed in the direction of light propagation, again and form the light cone already mentioned in this regard 22 as he is in 2 and 3 it can be seen only when the door is open 5 is open.

In 5 is a schematic view of an enlarged view of this light cone 22 to recognize.

Advantageously, it is thus provided that the optical device 18 an exterior and here internal optical element 20 which is a first focusing element.

In particular, it is provided that the lighting device 13 a housing-external and door-internal further optical element 23 having, as exemplified in 7 is shown. This further optical element 23 can also be formed in an advantageous embodiment as at least partially focusing element. This is given in the embodiment shown by a coupling region 24 this optical element 23 a concave surface 25 having. Due to the orientation of the in the coupling area 24 incident light rays 16 or 17 This concave surface works 25 collecting or bundling here. In another embodiment and orientation of the light beams 16 . 17 how they affect the light coupling area 24 impinge, this surface can also be designed otherwise, for example, be flat. In particular, this optical element has 23 which is in the door 5 is arranged, thus in particular a focusing or light collection area, which also integrates and thus integral with the optical element 23 can be trained.

This Lichteinkoppelbereich 24 which is a coupling end of the optical element 23 represents, in the closed state of the door 5 that from the case 2 from the light sources 14 and 15 radiated light can be coupled.

It is preferably provided that this optical element 23 so in the door 5 is arranged that the coupling area 24 in the closed state of the door 5 at the focal point 19 or within a distance interval of +/- 1.0 cm to this focal point 19 is arranged.

This is on 6 in which a portion of a vertical section through the cooking appliance 1 in the closed state of the door 5 is shown. As can be seen here, the optical element shown here only symbolically 20 the optical device 18 immediately adjacent to the coupling-in area 24 facing. This optical element 20 can, as it is in 4 is shown, opposite the outer wall 21 be arranged recessed inside. In this regard, as shown in FIG 4 then a diaphragm area or a pipe section 26 be provided. This can be formed matt on the inside in an advantageous embodiment. In another embodiment, it may be provided that this optical element 20 like this in 6 symbolically represented, up to the outer wall 21 extends or even arranged standing beyond.

In all embodiments, it is advantageously provided that this coupling region 24 the opposite to an outside 27 as they are in 6 shown is the door 5 set back inside, at the focal point 19 or within the already mentioned distance interval of +/- 1.0 cm.

It is preferably provided that the lighting device 13 in the closed state of the door 5 that about the optics 18 in the optical element 23 coupled light or light beams 16 . 17 out the door 5 out into the oven 3 radiates, as in 6 is indicated, and / or viewed in the depth direction of the cooking chamber 3 turned away from the door 5 radiates, as is also in 6 is indicated.

For this purpose, the lighting device 13 a light guide 29 in the door 5 on, these radiating possibilities with the door closed 5 offers.

In a particularly advantageous manner, it is provided that the lighting device 13 a first mode of operation in which the light beams 16 . 17 as seen from the light sources 14 . 15 are radiated, with a first luminous flux at a first light exit region from the housing 2 are radiated, and the lighting device 13 has at least a second operating mode in which these light beams 16 . 17 with a second luminous flux which differs from the first luminous flux at the light exit region from the housing 2 are radiated. This light exit region may, for example, the outlet opening on the outer wall 21 his or the light extraction area 29 ( 4 ) of the optical element 20 be, which in the direction of light propagation with optionally several existing optical elements in the housing 2 the last optical element in front of the outer wall 21 is.

Preferably, performing the first mode of operation is with a first position of the door 5 coupled and / or performing the second mode of operation coupled to a second position of the door. The first position of the door 5 may preferably be the fully closed position, as in 6 and 1 is shown. The second position of the door 5 is such, in which a vestibule 12 in front of the loading opening 4 of the cooking chamber 3 forms, this vestibule 12 through the at least partially opened door 3 is limited to the bottom. It can also be provided that the lighting device 13 for generating light beams 16 . 17 is formed in a first light color and at least for generating light beams 16 . 17 is formed in a first different second light color. It may be additionally or instead also provided that the lighting device 13 for generating a continuous light of the light beams 16 . 17 and / or a pulsed light of the light beams 16 . 17 is trained. Here, too, an individual assignment to different operating states can take place, so that, for example, in an operating state, the light beams 16 . 17 be generated in a steady light, and in a second operating state, a pulsed light of the light beams is generated. It may be provided in the context that, depending on the pulse rate and / or the light color, a specific operating function of the cooking appliance 1 is optically displayed and / or a specific value of an operating parameter of at least one operating function is optically displayed.

LIST OF REFERENCE NUMBERS

1

Cooking appliance

2

casing

3

oven

4

loading port

5

door

6

Handle

7

transparent area

8th

control panel

9

operating device

10

food support

11

be cooked

12

anteroom

13

lighting device

14

light source

15

light source

16

light rays

17

light rays

18

optical device

19

focus

20

optical element

21

outer wall

22

light cone

23

optical element

24

coupling end

25

surface

26

pipe section

27

outside

28

light guide

29

Lichtauskoppelbereich

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2011/117037 A1 [0002]
• DE 102009000655 B1 [0004]

Claims (13)

Cooking appliance (1), with a housing (2) in which a cooking chamber (3) is formed, and with a door (5) which is movably arranged on the housing (2) and is designed to close the cooking chamber (3) , and with a lighting device (13) having at least one light source (14, 15), wherein the lighting device (13) is arranged at least with partial components on the housing (2), characterized in that the lighting device (13) an optical device ( 18), which is designed for the defined influencing of the light beams (16, 17) of the light source (14, 15) such that the light beams (16, 17) outside the housing (2) in a focal point (19) are bundled. Cooking appliance (1) after Claim 1 , characterized in that the focal point (19) at a defined distance (a) to an outer wall (21) of the housing (2) is formed. Cooking appliance (1) after Claim 2 , characterized in that the distance (a) is between 0 cm and 5 cm. Cooking appliance (1) according to one of the preceding claims, characterized in that the door (5) has at least one optical element (23) of the lighting device (13), in which light beams (16, 17) of the light source (14, 15) in the closed State of the door (5) can be coupled, wherein the focal point (19) in the closed state of the door (5) at a coupling end (24) of the optical element (23) or within a distance interval of +/- 3.0 cm thereto. Cooking appliance (1) after Claim 4 , characterized in that the coupling end (24) has a surface (25) which is larger than the surface of the focal point (19). Cooking appliance (1) according to one of the preceding claims, characterized in that the door (5) has a light-guiding device (28) of the lighting device (13), with which in the closed state of the door (5) of the light source (14, 15) radiated Light beams (16, 17) in the depth direction (z) of the cooking appliance (1) to the front of the door (5) and / or to the rear of the door (5) are radiated. Cooking appliance (1) according to one of the preceding claims, characterized in that the lighting device (13) for illuminating in the depth direction (z) of the cooking appliance (1) in front of a feed opening (4) of the cooking chamber (3) lying antechamber (12) is formed when the door (5) is opened, wherein the antechamber (12) is spaced from the focal point (19) such that the illumination of the antechamber (12) is in the direction of propagation of the light beams (16, 17) towards the focal point (12). 19) again widened light cone (22). Cooking appliance (1) according to one of the preceding claims, characterized in that the lighting device (13) has a first operating mode in which the light beams (16, 17) with a first luminous flux at a light exit area from the housing (2) are emitted, and has an at least second operating mode in which the light beams (16, 17) are emitted from the housing (2) at a second luminous flux different from the first luminous flux at the light exit region. Cooking appliance (1) after Claim 8 characterized in that performing the first mode of operation is coupled to a first position of the door (5), and / or the performing of the second mode of operation is coupled to a second position of the door (5). Cooking appliance (1) after Claim 9 , characterized in that the first position of the door (5) is a fully closed position and / or the second position of the door (5) is such, in which a vestibule (12) in front of a feed opening (4) of the cooking chamber ( 3) which is bounded below by the door (5). Cooking appliance (1) according to one of the preceding claims, characterized in that the lighting device (13) for generating light beams (16, 17) is formed in a first light color and at least for generating light beams (16, 17) in the first different second Light color is formed and / or for generating a continuous light of the light beams (16, 17) and / or a pulsed light of the light beams (16, 17) is formed. Cooking appliance (1) after Claim 11 , characterized in that different operating functions of the cooking appliance (1) are visually displayed by the different light colors and / or different values of operating parameters of at least one operating function of the cooking appliance (1) are optically displayed and / or different operating functions and / or depending on a pulse frequency of the light beams or different values of operating parameters of at least one operating function of the cooking appliance (1) are optically displayed. Cooking appliance (1) according to one of the preceding claims, characterized in that the light source (14, 15) is a light-emitting diode, in particular a multi-color light-emitting diode.

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